Power divider and microwave equipment

Abstract

The invention provides a power divider and microwave equipment, and relates to the power distribution technology, and the power divider comprises a substrate, a plurality of terminal electrodes disposed on the outer side of the substrate, and a plurality of inner electrodes disposed on the inner side of the substrate. The plurality of terminal electrodes comprise an input electrode, at least two output electrodes and at least one grounding electrode; the plurality of inner electrodes comprise a grounding metal plate and two power division assemblies connected with the input electrode in parallel, each power division assembly comprises a filtering inductor, a first grounding capacitor and a conductive piece, the first grounding capacitors and the filtering inductors are arranged at intervals in the reference direction, and the first grounding capacitors and the grounding metal plate are arranged in a stacked mode in the reference direction; all the first grounding capacitors can be close to the grounding metal plate and are jointly connected to the same grounding metal plate, the number of the grounding metal plates arranged in the base body is reduced, the process design difficulty and production cost of the power divider are reduced, the distance between the filter inductor and the first grounding capacitors is increased, and the power divider is more compact. And the parasitic effect generated between the grounding capacitor and the filter inductor is reduced.

Description

Technical Field

[0001] The present application relates to power distribution technology, and more specifically, to a power distributor and microwave equipment. Background Art

[0002] The power divider is used for the transmission of microwave signals and can distribute the input microwave signal to multiple output ports according to a predetermined ratio. The power divider often uses low temperature co-fired ceramic (LTCC) technology. By embedding multiple electronic components that constitute the power distribution circuit into a ceramic substrate, and then stacking and sintering multiple ceramic substrates together, a high-density circuit that does not interfere with each other in three-dimensional space is formed. It has the advantages of small size, strong weight, high reliability, and good batch consistency.

[0003] At present, the power divider is composed of a ceramic matrix, a plurality of inductors and a plurality of grounding capacitors. These inductors and grounding capacitors are respectively embedded in different base layers of the ceramic matrix, and the grounding capacitor is generally located in the base layer of the corresponding inductor underside, so that one end of the grounding capacitor is directly connected to the inductor, and a grounding metal plate is arranged in the base layer of the grounding capacitor underside, so that the other end of the grounding capacitor is grounded through the grounding metal plate. However, due to the different distribution positions of each inductor and each grounding capacitor in the ceramic matrix, it is necessary to arrange a grounding metal plate below each grounding capacitor, which is not conducive to the structural optimization inside the power divider, increases the complexity of the design process, and causes the production cost to rise. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a power divider and a microwave device to solve the problem of complex internal structure of the power divider in the prior art.

[0005] To achieve the above-mentioned purpose, in a first aspect, the present application provides a power divider, comprising a substrate, a plurality of end electrodes arranged on the outside of the substrate and a plurality of inner electrodes arranged on the inside of the substrate; the plurality of end electrodes include an input electrode, at least two output electrodes and at least one grounding electrode; the plurality of inner electrodes include a grounding metal plate and at least two power division components connected in parallel with the input electrode, the power division component includes a filter inductor, a first grounding capacitor and a conductive member, the input end of the filter inductor is connected to the input electrode, and the output end is connected to a corresponding output electrode; the first grounding capacitor and the filter inductor are arranged at intervals along a reference direction, the input end of the first grounding capacitor is connected to the output end of the first inductor through the conductive member; the first grounding capacitor and the grounding metal plate are stacked along the reference direction, the output end of the first grounding capacitor is connected to the grounding metal plate, and the grounding metal plate is connected to the grounding electrode.

[0006] In some embodiments, the filter inductor includes a first inductor, a second inductor and a connecting electrode, the first inductor, the connecting electrode and the second inductor are stacked along the reference direction; the input end of the first inductor is connected to the input electrode, and the output end is connected to the connecting electrode; the input end of the second inductor is connected to the connecting electrode, and the output end is connected to a corresponding output electrode; the conductive member is connected to the connecting electrode and the input end of the first grounding capacitor.

[0007] In some embodiments, the conductive member is a conductive metal column arranged along the reference direction, the conductive metal column is located between the connecting electrode and the first grounding capacitor, and two ends of the conductive metal column are respectively connected to the connecting electrode and the input end of the first grounding capacitor.

[0008] In some embodiments, the inner electrode further includes a second grounding capacitor, the second grounding capacitor and the grounding metal plate are stacked along the reference direction, and the input end of the second grounding capacitor is connected to the input electrode, and the output end is connected to the grounding metal plate.

[0009] In some embodiments, the input electrode is provided with at least two first connection parts embedded in the substrate; one of the first connection parts is coplanarly arranged with the first inductor and connected to the input end of the first inductor; the other first connection part is coplanarly arranged with the second grounding capacitor and connected to the input end of the second grounding capacitor.

[0010] In some embodiments, the output electrode is provided with a second connecting portion embedded in the substrate, the second connecting portion is coplanar with the second inductor and connected to an output end of the second inductor.

[0011] In some embodiments, the ground electrode is provided with a third connection portion embedded in the substrate, and the third connection portion is coplanar with the ground metal plate and connected to the ground metal plate.

[0012] In some embodiments, the number of the power division components is an even number and they are symmetrically arranged along a reference plane, and the reference plane is parallel to the reference direction.

[0013] In some embodiments, the number of the grounding electrodes is three; two of the grounding electrodes and the input electrode are jointly arranged on the first side of the substrate, and the input electrode is located between the two grounding electrodes; another grounding electrode and two output electrodes are jointly arranged on the second side of the substrate, and the grounding electrode is located between the two output electrodes; the first side and the second side are two opposite outer side surfaces of the substrate.

[0014] In a second aspect, the present application provides a microwave device, comprising a power divider as described in the first aspect and any optional embodiment thereof; further comprising a microwave signal source and at least two microwave loads, the microwave signal source being connected to an input electrode of the power divider for providing a microwave signal to the power divider; the microwave load being connected to an output electrode corresponding to the power divider for receiving the microwave signal distributed by the power divider.

[0015] The beneficial effects of the power divider and microwave equipment provided by the present application are as follows: compared with the prior art, the filter inductor and the first grounding capacitor are arranged at intervals in the reference direction, and the grounding capacitor and the first filter inductor are connected by a conductive member, so that all the first grounding capacitors can be arranged close to the grounding metal plate, so that all the first grounding capacitors are directly connected to the grounding metal plate, thereby reducing the number of grounding metal plates arranged in the substrate, reducing the process preparation difficulty and production cost of the power divider, and being able to spatially isolate the filter inductor and the first grounding capacitor, increase the spacing between the filter inductor and the first grounding capacitor, and effectively reduce the parasitic effect formed between the filter inductor and the first grounding capacitor, with the characteristics of low loss and excellent amplitude and phase characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a schematic diagram of the structure of the power distributor in the embodiment of the present application;

[0018] Figure 2 is a perspective view of a power distributor in an embodiment of the present application at a first viewing angle;

[0019] Figure 3 is a perspective view of the power distributor in the embodiment of the present application at a second viewing angle;

[0020] Figure 4 is a perspective view of the power distributor in the embodiment of the present application at a third viewing angle;

[0021] Figure 5 is an equivalent circuit diagram of the power divider in the embodiment of the present application.

[0022] Among them, the reference numerals in the figure are:

[0023] 10-substrate; 11-identification part; 20-input electrode; 21-first connecting part; 30-output electrode; 31-second connecting part; 40-grounding electrode; 41-third connecting part; 50-filter inductor; 51-connecting electrode; 60-first capacitor plate; 70-second capacitor plate; 80-grounding metal plate; 90-conductive metal column; L1-first inductor; L2-second inductor; C1-first grounding capacitor; C2-second grounding capacitor. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] The present application embodiment provides a power distributor, such as Figure 1 As shown, the power divider includes a substrate 10 , a plurality of terminal electrodes arranged outside the substrate 10 , and a plurality of inner electrodes arranged inside the substrate 10 .

[0029] The power divider can be made by low temperature co-fired ceramic (LTCC) process, and the substrate 10 is a ceramic substrate 10 formed by firing low temperature co-fired ceramic powder. The firing temperature of the ceramic powder is 850°C to 920°C, the dielectric constant of the ceramic powder is 5 to 12, and the dielectric loss factor is less than or equal to 0.005. Specifically, a plurality of ceramic substrates are first made of low temperature co-fired ceramic powder, and then the plurality of ceramic substrates are stacked and fired to form the substrate 10. The shape of the substrate 10 can be a rectangular structure, and the size of the substrate 10 can be 2.00mm*1.25mm*0.85mm. An identification portion 11 can also be provided on the substrate 10, and the identification portion 11 can be convexly arranged on the upper surface of the substrate 10, and the installation direction of the substrate 10 is determined by the identification portion.

[0030] The end electrode is a conductive component arranged on the outside of the power divider. The end electrode can be fixed on the outer surface of the substrate 10 by printing. The end electrode can be made of three layers of metal paste. The three layers of metal paste can be silver paste layer, nickel paste layer and tin paste layer from the inside to the outside, which improves the welding reliability of each end electrode. The inner electrode is a conductive component arranged on the inner side of the substrate 10. The inner electrode can be made of silver paste. The sintering temperature of the silver paste is 850-920°C. The silver content of silver palladium is 80-88%. The thickness of the silver layer is 10-25μm. The silver paste has good conductivity and low resistivity, which helps to reduce energy loss during signal transmission. The inner electrode is embedded in each ceramic substrate of the substrate 10 during the process of stacking the substrate 10, so that when multiple ceramic substrates are fired to form the substrate 10, multiple inner electrodes are formed inside the substrate 10.

[0031] The multiple terminal electrodes include an input electrode 20, at least two output electrodes 30, and at least one ground electrode 40. The input electrode 20 is used to connect the microwave signal source in the microwave device, the output electrode 30 is used to connect the microwave load in the microwave device, and the ground electrode 40 is used to provide a stable reference potential to ensure the signal stability and anti-interference ability of the power divider during operation. The multiple internal electrodes constitute a power distribution circuit on the inner side of the substrate 10. The power distribution circuit has an input end and at least two output ends. The input end of the power distribution circuit is connected to the input electrode 20. The number of output electrodes 30 should be the same as the number of output ends of the power distribution circuit and connected one by one. The initial microwave signal emitted by the microwave signal source is transmitted to the power distribution circuit through the input electrode 20, and the initial microwave signal is evenly distributed into multiple microwave signals, and output to the corresponding microwave load through each output electrode 30.

[0032] like Figure 2-Figure 4As shown, the multiple inner electrodes include a grounded metal plate 80 and at least two power division components connected in parallel with the input electrode 20, the power division components include a filter inductor 50, a first grounded capacitor C1 and a conductive member, the input end of the filter inductor 50 is connected to the input electrode 20, and the output end is connected to a corresponding output electrode 30; the first grounded capacitor C1 and the filter inductor 50 are arranged at intervals along the reference direction, and the input end of the first grounded capacitor C1 is connected to the output end of the first inductor L1 through the conductive member; the first grounded capacitor C1 and the grounded metal plate 80 are stacked along the reference direction, the output end of the first grounded capacitor C1 is connected to the grounded metal plate 80, and the grounded metal plate 80 is connected to the grounded electrode 40.

[0033] The reference direction may be a vertical direction, that is, the filter inductor 50 and the first grounding capacitor C1 are arranged at intervals in the vertical direction, and the first filter inductor 50 and the grounding metal plate 80 are stacked in the vertical direction.

[0034] The grounding metal plate 80 is a flat plate arranged horizontally and embedded in the ceramic substrate on the lower side of the base 10. The first grounding capacitor C1 includes a first capacitor plate 60, which is embedded in the ceramic substrate located on the upper side of the grounding metal plate 80, so that the first capacitor plate 60 and the grounding metal plate 80 constitute the first grounding capacitor C1, and the first grounding plate is the input end of the first grounding capacitor C1, and the output end of the first grounding capacitor C1 is grounded through the grounding metal plate 80. The filter inductor 50 can be a rectangular spiral inductor, and the wire diameter of the spiral inductor can be 70μm. The filter inductor 50 can be arranged in the ceramic substrate on the upper side of the base 10, so that the filter inductor 50 and the first grounding capacitor C1 are arranged in a vertical direction. The conductive member can be connected between the filter inductor 50 and the first capacitor plate 60 to connect the output end of the filter inductor 50 with the input end of the first grounding capacitor C1.

[0035] The filter inductor 50 and the first grounding capacitor C1 constitute a power division component, and multiple power division components are arranged in parallel to form a power distribution circuit, wherein the input ends of multiple filter inductors 50 are connected to each other to form the input end of the power distribution circuit, and the output end of each filter inductor 50 serves as the output end of the power distribution circuit. The initial microwave signal is evenly distributed to each power division component through the input electrode 20, and the microwave signal is filtered by the filter inductor 50 to reduce noise and interference in the signal, and then the purity of the microwave signal is improved by the first grounding capacitor C1, so that the output end of the filter inductor 50 outputs a microwave signal with better quality.

[0036] In each power division component, the first grounding capacitor C1 is arranged at intervals with the filter inductor 50 and is stacked with the grounding metal plate 80, so that all the first grounding capacitors C1 can be connected to one grounding metal plate 80, reducing the number of grounding metal plates 80 set in the substrate 10, reducing the process preparation difficulty and production cost of the power divider, and can also spatially isolate the filter inductor 50 and the first grounding capacitor C1, increase the distance between the filter inductor 50 and the first grounding capacitor C1, and effectively reduce the parasitic effect formed between the filter inductor 50 and the first grounding capacitor C1.

[0037] In some embodiments, the filter inductor 50 includes a first inductor L1, a second inductor L2 and a connecting electrode 51, and the first inductor L1, the connecting electrode 51 and the second inductor L2 are stacked along a reference direction; the input end of the first inductor L1 is connected to the input electrode 20, and the output end is connected to the connecting electrode 51; the input end of the second inductor L2 is connected to the connecting electrode 51, and the output end is connected to a corresponding output electrode 30; the conductive member is connected to the connecting electrode 51 and the input end of the first grounding capacitor C1.

[0038] The first inductor L1 and the second inductor L2 are both rectangular spiral inductors. The first inductor L1 can be arranged in a ceramic substrate on the upper side of the base 10. The connecting electrode 51 and the second inductor L2 are sequentially stacked and arranged below the first inductor L1. The output end of the first inductor L1 and the input end of the second inductor L2 are connected to the connecting electrode 51, so as to realize the series connection of the first inductor L1 and the second inductor L2. The connecting electrode 51 is connected to the input end of the first grounding capacitor C1 through a conductive member, so that the input end of the first grounding capacitor C1 is connected to the connection point of the first inductor L1 and the second inductor L2.

[0039] Combination Figure 5 As shown, in the power division component, the microwave signal first passes through the first inductor L1, and the first inductor L1 performs preliminary filtering on the microwave signal to remove some unnecessary frequency components, and then further finely filters the remaining clutter in the microwave signal through the second inductor L2 to ensure the quality of the output microwave signal. In addition, under the action of the first grounding capacitor C1, the stability of the microwave signal is further enhanced. The first grounding capacitor C1 is connected in parallel with the second inductor L2, which helps to suppress high-frequency noise and provide a stable reference ground for the microwave signal. By reasonably designing the parameters of the first inductor L1 and the second inductor L2, it is possible to optimize the signal within a specific frequency range, thereby meeting the specific requirements of different microwave equipment for signal quality. Not only does it improve the purity of the signal, but it also reduces energy loss, improves the efficiency of the power divider, effectively extends the service life of the microwave equipment, and reduces maintenance costs.

[0040] In some embodiments, the conductive member is a conductive metal column 90 arranged along the reference direction, the conductive metal column 90 is located between the connecting electrode 51 and the first grounding capacitor C1, and the two ends of the conductive metal column 90 are respectively connected to the connecting electrode 51 and the input end of the first grounding capacitor C1.

[0041] The conductive metal column 90 can also be made of silver paste. The conductive metal column 90 can be a cylindrical structure of a cylinder or other shapes. In the process of preparing the base 10, a circular hole can be opened at a corresponding position in the ceramic substrate of a corresponding height, and a metal plate can be printed in the circular hole. The vertically arranged conductive metal column 90 is formed by stacking multiple layers of metal plates. The connecting electrode 51 can be protruded at the output end of the first inductor L1 in the horizontal direction, so that the end of the connecting electrode 51 facing away from the first inductor L1 extends to the top of the conductive metal column 90, and the first capacitor plate 60 constituting the first grounding capacitor C1 is arranged below the conductive metal column 90, so that the upper and lower ends of the conductive metal column 90 are connected to the connecting electrode 51 and the input end of the first grounding capacitor C1 respectively, and the first grounding capacitor C1 is connected in parallel to the output end of the first inductor L1.

[0042] In some embodiments, the inner electrode further includes a second grounding capacitor C2 , which is stacked with the grounding metal plate 80 along a reference direction, and the input end of the second grounding capacitor C2 is connected to the input electrode 20 , and the output end is connected to the grounding metal plate 80 .

[0043] The second grounding capacitor C2 may include a second capacitor plate 70, which may be coplanar with the first flashlight plate and located above the grounding metal plate 80, so that a second grounding capacitor C2 is formed between the second capacitor plate 70 and the grounding metal plate 80, and the second capacitor plate 70 is the input end of the second grounding capacitor C2.

[0044] By making the second grounding capacitor C2 and the first grounding capacitor C1 share the same grounding metal plate 80, the number of grounding metal plates 80 in the machine body is reduced, the volume and cost of the power divider are reduced, and the stability and reliability of microwave signal transmission are guaranteed. Part of the input electrode 20 can be embedded in the substrate 10 and directly connected to the second capacitor plate 70 to connect the input end of the second grounding capacitor C2 to the input electrode 20. Under the action of the second grounding capacitor C2, the initial microwave signal input by the input electrode 20 can be initially filtered before distribution, thereby improving the processing efficiency of the subsequent power division components for the microwave signal.

[0045] In some embodiments, the input electrode 20 is provided with at least two first connection parts 21 embedded in the substrate 10; one of the first connection parts 21 is coplanarly arranged with the first inductor L1 and connected to the input end of the first inductor L1; the other first connection part 21 is coplanarly arranged with the second grounding capacitor C2 and connected to the input end of the second grounding capacitor C2.

[0046] like Figure 2 As shown, two first connection parts 21 are arranged in the base 10, one of which is arranged together with the first inductor L1 in the ceramic substrate on the upper side of the base 10, and the output end of the first inductor L1 extends to the first connection part 21 and is directly connected to the first connection part 21. The other first connection part 21 is coplanar with the second capacitor plate 70 of the second grounding capacitor C2, and is connected to the second capacitor plate 70, and the input end of the second grounding capacitor C2 is directly connected. The second grounding capacitor C2 and each power division component are connected in parallel, which simplifies the connection between the input electrode 20 and the second grounding capacitor C2 and the power division component, and improves the stability of the connection between the input electrode 20 and the second grounding capacitor C2 and each power division component.

[0047] In some embodiments, the output electrode 30 is provided with a second connection portion 31 embedded in the substrate 10, the second connection portion 31 is coplanar with the second inductor L2, and is connected to the output end of the second inductor L2. The output end of the second inductor L2 is directly connected to the output electrode 30 through the second connection portion 31, ensuring the transmission efficiency of the microwave signal from the second inductor L2 to the output electrode 30.

[0048] In some embodiments, the ground electrode 40 is provided with a third connection portion 41 embedded in the substrate 10, and the third connection portion 41 is coplanar with the ground metal plate 80 and connected to the ground metal plate 80. The third connection portion 41 can be integrally formed with the ground metal plate 80, so that the connection between the ground electrode 40 and the ground metal plate 80 is more stable.

[0049] In some embodiments, the number of power division components is an even number and they are symmetrically arranged along a reference plane, and the reference plane is parallel to the reference direction.

[0050] When the reference direction is the vertical direction, the reference plane can be a vertical plane perpendicular to the length direction of the substrate 10. When the number of power division components is two, the two first inductors L1, the two connecting electrodes 51, the two second inductors L2, the two conductive metal pillars 90 and the two first grounding capacitors C1 are all arranged symmetrically along the reference plane in the substrate 10. This makes the distribution of the power division components in the substrate 10 more uniform, facilitates the structural design of the internal electrodes, and effectively reduces electromagnetic interference, ensuring the stability and reliability of signal transmission. An even number of power division components also helps to achieve better frequency response characteristics, making the power divider work more efficiently in a specific frequency band.

[0051] In some embodiments, the number of grounding electrodes 40 is three; two grounding electrodes 40 and the input electrode 20 are jointly arranged on the first side of the substrate 10, and the input electrode 20 is located between the two grounding electrodes 40; another grounding electrode 40 and two output electrodes 30 are jointly arranged on the second side of the substrate 10, and the grounding electrode 40 is located between the two output electrodes 30; the first side and the second side are two opposite outer side surfaces of the substrate 10.

[0052] When the two power division components are arranged symmetrically, the input electrode 20 can be located in the middle of the first side surface of the substrate 10, and the first connection portion 21 provided on the input electrode 20 is also correspondingly provided between the two groups of first inductors L1, and the input end of the first inductor L1 extends to the first connection portion 21 and is connected to the first connection portion 21. The two output electrodes 30 can be symmetrically provided on the second side surface of the substrate 10 along the reference plane, so that the positions of the second connection portions 31 on the two output electrodes 30 are opposite to the positions of the output ends of the second inductors L2.

[0053] Among the three ground electrodes 40, one ground electrode 40 is located between the two output electrodes 30, and the other two ground electrodes 40 are respectively located on both sides of the input electrode 20, so as to ensure good isolation between the ground electrode 40 and the input electrode 20 and the output electrode 30, thereby reducing crosstalk between signals. At the same time, by evenly distributing the ground electrodes 40 on both sides of the substrate 10, the electromagnetic compatibility of the power divider can be further improved, and it is also helpful to optimize the current path and reduce the overall impedance, thereby improving the efficiency of the power divider and the signal transmission quality.

[0054] In summary, the power distributor provided in the embodiment of the present application effectively reduces the generation of parasitic capacitance by arranging the filter inductor 50 and the first grounding capacitor C1 and the second grounding capacitor C2 at intervals, and enables multiple first grounding capacitors C1 and second grounding capacitors C2 to share the same grounding metal plate 80. It has the characteristics of compact structure and reasonable layout, and can effectively improve the uniformity and stability of signal distribution.

[0055] In the second aspect, the embodiments of the present application also provide a microwave device, including a power divider as in the embodiment of the first aspect; also including a microwave signal source and at least two microwave loads, the microwave signal source is connected to the input electrode 20 of the power divider, for providing a microwave signal to the power divider; the microwave load is connected to an output electrode 30 corresponding to the power divider, for receiving the microwave signal distributed by the power divider.

[0056] The microwave signal source can be various types of microwave oscillators, such as magnetrons, traveling wave tubes, solid-state oscillators, etc. The microwave load can be various microwave absorption loads, test loads, or microwave devices in practical applications. The input electrode 20 of the power divider is connected to the microwave signal source to ensure that the stable output of the signal source can be evenly distributed to each output electrode 30. The microwave load connected to each output electrode 30 can be the same, or it can be configured differently according to actual application requirements to adapt to different power distribution requirements. In this way, the power divider can effectively distribute the power of the microwave signal source to multiple loads, thereby achieving uniform signal distribution and effective use of power.

[0057] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A power distributor, characterized in that: It comprises a substrate, a plurality of terminal electrodes arranged outside the substrate, and a plurality of inner electrodes arranged inside the substrate; The plurality of terminal electrodes include an input electrode, at least two output electrodes and at least one ground electrode; The plurality of inner electrodes include a grounded metal plate and at least two power division components connected in parallel with the input electrode, the power division components include a filter inductor, a first grounded capacitor and a conductive member, the input end of the filter inductor is connected to the input electrode, and the output end is connected to a corresponding output electrode; The first grounding capacitor and the filter inductor are arranged at intervals along a reference direction, and an input end of the first grounding capacitor is connected to an output end of the first inductor through the conductive member; The first grounding capacitor and the grounding metal plate are stacked along the reference direction, the output end of the first grounding capacitor is connected to the grounding metal plate, and the grounding metal plate is connected to the grounding electrode.

2. The power divider according to claim 1, characterized in that: The filter inductor comprises a first inductor, a second inductor and a connecting electrode, wherein the first inductor, the connecting electrode and the second inductor are stacked along the reference direction; an input end of the first inductor is connected to the input electrode, and an output end is connected to the connecting electrode; The input end of the second inductor is connected to the connection electrode, and the output end is connected to a corresponding output electrode; The conductive member is connected to the connection electrode and an input end of the first grounding capacitor.

3. The power divider according to claim 2, characterized in that: The conductive member is a conductive metal column arranged along the reference direction, the conductive metal column is located between the connecting electrode and the first grounding capacitor, and two ends of the conductive metal column are respectively connected to the connecting electrode and the input end of the first grounding capacitor.

4. The power divider according to claim 1, characterized in that: The inner electrode further includes a second grounding capacitor, which is stacked with the grounding metal plate along the reference direction, and has an input end connected to the input electrode and an output end connected to the grounding metal plate.

5. The power divider according to claim 4, characterized in that: The input electrode is provided with at least two first connecting parts embedded in the substrate; one of the first connecting parts is arranged coplanarly with the first inductor and connected to the input end of the first inductor; the other first connecting part is arranged coplanarly with the second grounding capacitor and connected to the input end of the second grounding capacitor.

6. The power divider according to claim 2, characterized in that: The output electrode is provided with a second connecting portion embedded in the substrate, the second connecting portion is coplanar with the second inductor and connected to the output end of the second inductor.

7. The power divider according to claim 1, characterized in that: The grounding electrode is provided with a third connection portion embedded in the substrate, and the third connection portion is coplanar with the grounding metal plate and connected to the grounding metal plate.

8. The power divider according to any one of claims 1 to 7, characterized in that: The power division components are in an even number and are symmetrically arranged along a reference plane, and the reference plane is parallel to the reference direction.

9. The power divider according to any one of claims 1 to 7, characterized in that: The number of the grounding electrodes is three; two of the grounding electrodes and the input electrode are jointly arranged on the first side surface of the substrate, and the input electrode is located between the two grounding electrodes; another grounding electrode and two output electrodes are jointly arranged on the second side surface of the substrate, and the grounding electrode is located between the two output electrodes; the first side surface and the second side surface are two opposite outer side surfaces of the substrate.

10. A microwave device, characterized in that: It comprises a power divider as described in any one of claims 1 to 9; it also comprises a microwave signal source and at least two microwave loads, the microwave signal source is connected to the input electrode of the power divider, and is used to provide a microwave signal to the power divider; the microwave load is connected to an output electrode corresponding to the power divider, and is used to receive the microwave signal distributed by the power divider.

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